package com.blb.utils;

import java.io.IOException;
import java.io.InputStream;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

public class MybatisUtils {
	
	private static SqlSessionFactory sqlSessionFactory = null;

	/**
	 * 获取SqlSession
	 * @return
	 * @throws IOException
	 */
	public static SqlSession getSession() throws IOException{
		if (sqlSessionFactory==null) {
			String resource = "mybatis-conf.xml";
			InputStream inputStream = Resources.getResourceAsStream(resource);
			sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
		}
		return sqlSessionFactory.openSession();
	}
	
	/**
	 * 关闭session
	 * @param session
	 */
	public static void closeSession(SqlSession session){
		session.close();
	}
}
